In British English "advice" is the noun, and "advise" is the verb. Here are a few examples.

* The advice that Shyam gave Vidya was useless.

* Please don't give Achala bad advice.

* I don't need any advice from you, Naresh.

The "c" in the final syllable of "advice" is like the "s" in "see", "sip", and "sat". Remember, the word "advice" is an uncountable noun. There is no word "advices". As for the verb "advise", the "s" is pronounced like the "z" in "zip", "zero", and "zoo".

* The teacher advised the students to take the day off.

* Kannan advised me to go to Mumbai and meet the client.

* Didn't I advise you not to see her?

In American English, this distinction between the two words is not always maintained.